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5.2 3D Features
5.2.12
Frame Combine
Very high frame rates, that are well over 1000 fps, can be achieved in 3Donly mode. Every
frame (image) activates an interrupt in the GigE software which will issue a high CPU load or
the frame rate can not be handled at all by an overload of interrupts.
To solve this issue, the FrameCombine mode has been implemented in the MV1-D2048-3D03/04
camera. In this mode, the data of n images are bundled into one frame. In the example shown
in Fig. 5.18 4 frames are combined into one frame (
FrameCombineNrFrames
=4). In this case there
are 4 times less software interrupts that indicate a new frame than without FrameCombine and
the CPU load is significantly reduced. Instead of receiving 4 images with 5 rows, only one
image with 20 rows is received which reduces the frame rate that sees the computer. Without
FrameCombine, the CPU load on the computer might be too high to receive all images and
images might be dropped. The value n (=
FrameCombineNrFrames
) can be set by the user. This
value should be set so that the resulting frame rate is well below 1000 fps (e.g. at 100 fps). E.g.
if the camera shows a maximal frame rate of 4000 (property
AcquisitionFrameRateMax
), then
FrameCombineNrFrames
could be set to 40 to have a resulting frame rate of 100 fps. Another
example of FrameCombineNrFrames=2 is shown in Fig. 5.17. The PF 3D Suite supports this
mode.
The
FrameCombineNrFrames
value should be set so that the resulting frame rate is
well below 1000 fps.
I
n d i v i d u a l i m a g e s
C o m b i n e d i m a g e
F r a m e C o m b i n e
Figure 5.18: Example for FrameCombine with 4 frames
Frame Combine Timeout
There exist possibilities to transmit the combined frame even if there is not enough data to fill
it. E.g. It can be desirable to get the 3D data immediately after an item on the conveyor belt
has passed.
FrameCombine_Timeout
A timeout can be specified after which the combined frame will be
transmitted, regardless if there was enough data to fill it. The timeout counter is reset
after each frame and counts until a new trigger has been detected or until the timeout is
reached.
A FrameCombine_Timeout value of 0 disables the FrameCombine timeout fea-
ture.
MAN052 12/2018 V3.2
47 of 131
Содержание MV1-D2048-3D03 Series
Страница 1: ...Photonfocus MV1 D2048 3D03 3D04 Camera Series 3D CMOS camera with GigE interface MAN052 12 2018 V3 2...
Страница 10: ...1 Preface 10 of 131 MAN052 12 2018 V3 2...
Страница 12: ...2 Introduction 12 of 131 MAN052 12 2018 V3 2...
Страница 16: ...3 How to get started 3D GigE G2 Figure 3 3 PFInstaller components choice 16 of 131 MAN052 12 2018 V3 2...
Страница 26: ...3 How to get started 3D GigE G2 26 of 131 MAN052 12 2018 V3 2...
Страница 32: ...4 Product Specification 32 of 131 MAN052 12 2018 V3 2...
Страница 71: ...5 4 Trigger and Strobe MAN052 12 2018 V3 2 71 of 131...
Страница 84: ...5 Functionality 84 of 131 MAN052 12 2018 V3 2...
Страница 120: ...11 Support and Repair 120 of 131 MAN052 12 2018 V3 2...
Страница 122: ...12 References 122 of 131 MAN052 12 2018 V3 2...